The approximately nine months of prenatal development occurs in three phases in the following sequence:

Differences in mean IQ scores and the calculated heritability indexes for IQ have

been interpreted by some in terms of genetic differences in intelligence between the races. What is the book's position on this? (a) it is known that there are no mean differences in the races due to genetics (b) there are mean differences in actual intelligence between the races due to genetics (c) since the environments differ, known genetic components in individual differences tell us nothing about genetic differences between groups (d) none of the above

Marion is 40 years old. According to the American Cancer Society and the American College of Radiology, she should start having mammograms __________

a) every year b) every other year c) every 5 years d) after age 50